Insulator.



PATEN'IED SEPT. l, 1908. F. J. SIEGWART.

INSULATOR.

APPLICATION FILED JAN. 3, 1908.

FRANK JOSEPH SIEGWART, OF PITTSBURG, PENNSYLVANIA.

INSULATOR.

Application filed. January 3, 1908.

Specification of Letters Patent.

Patented Sept. 1, 1-908.

Serial No. 409,112.

To all whom it may concern:

Be it known that I, FRANK Josnrrr SIEG- WART, a citizen of the United States of America, residing at North Side, Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Insulators, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to an insulator, and the objects of my invention are, first, to provide a simple and inexpensive insulator; second, an insulator wherein positiveand reliable means are employed for holding a wire without the use of screws or similar fastening means; and third, to rovide a durable insulator to which a wire can be easily and quickly fastened.

I attain the above objects by a structure that will be presently described and then specifically pointed out in the appended claims.

In the drawings: Figure 1 is a bottom plan view of the insulator constructed in accordance with my invention, illustrating a wire secured thereto, Fi 2 is an elevation of the same, with the insu ator secured to a suitable support, Fig. 3 is a bottom plan of the insulator with the wire detached, Fig. 4 is an elevation of the same, Fig. 5 is a horizontal sectional view of the insulator, and Fig. 6 is a longitudinal sectional view of the same.

In the accompanying drawings, 1 designates the body of the insulator, which is constructed of porcelain or a similar non-conductive material. The body of the insulator is preferably oval in cross section, and of a sufficient depth to insure a positive insulation between the wire secured to the insulator, and the support thereof. The longer side faces 1 of the body are made flat as shown, while the narrower side faces 1 are rounded. The insulator is attached to a sup port in any suitable manner, as by providing the same with apertures 4 to receive securing screws 6 to engage in the support. The outer end or face of the insulator is provided with a wire-receiving slot 2 which extends across the narrower width of the face diagonally, and, at its ends, intersects with grooves 3 formed in the opposite side faces of the body 1 and extending in opposite directions so that the grooves 2 and 3 1f viewed in plan as seen in Fig. 3, are substantially Z- sha e in form. The grooves 3, 3 are formed in t 1e opposite side faces of the body a slight 'posite grooves 3.

distance away from the end face which has the groove 2 as clearly seen in Figs. 2 and 4 and these grooves are made of a depth conforming substantially to the diameter of the wire to be received in the grooves 2 and 3, or at least of a depth substantially equal to the diameter of said wire so that the portion of the wire which lies within said grooves 3 will not interfere with that portion of the wire which lies against the outer face of the body of the insulator, and thus permit of the wire being so connected with the insulator as to have the ortions of the wire that extend in opposite irections from the insulator, both in the same plane.

By reference to Fig. 1 of the drawing it Will be observed that the wire 7 is secured to the insulator by placing the same in the transverse groove 2, and the wire at opposite sides of the insulator engaged in the op- The part 7" of the wire which leads into the groove 2 from one face of the insulator is then carried around one of the rounded faces 1 and along the opposite flat face 1 of the insulator body similarly the portion 7 of the wire leading out from the groove 2 is carried through the groove 3 on that side of the insulator body, and around the opposite rounded face 1 to that embraced by the portion 7 a of the wire. The portion 7 of the wire which lies against the flat face 1 of the insulator lies against that portion of wire 7 that is within the groove 3, and similarly, that portion of wire 7 b that lies against a flat face 1 of the insulator body, hes against the portion of wire 7 a that rests in groove 3 and consequently the portions of the wire which embrace the fiat side faces and the rounded faces of the insulator body are all in the same plane as are the extremities of the wire leading from opposite rounded faces of the insulator. It w be noticed that by this construction the pull or strain on the wire in opposite directions causes those portions of the wire which lie upon the portions in the grooves 3 to firmly bind the wire to the insulator and prevent accidental disengagement thereof.

Having now described my invention what I claim as new, is 1. An insulator comprising a body portion substantially oblong in plan having opposite flat faces and opposite rounded faces, said body having a groove in the outer face thereof extending diagonally across the narrower width of the face, and said flat faces of the body each having a groove spaced away from the grooved. outer face of the body, the grooves in the flat faces extending in opposite directions and each intersecting at their inner ends with the groove in the outer face of the body.

2. An insulator comprising a body having an oblong end face provided. with a groove extending diagonally across the narrower width of said face, said body provided on opposite sides thereof with grooves spaced away from the end face and extending in opposite directions, the said. grooves at their inner ends intersecting the diagonal groove in the end face of said. body.

In testimony whereof I afliX my signature in the presence of two witnesses.

FRANK JOSEPH SIEGl/VART.

Witnesses:

MAX H. SRoLovrrZ, K. H. BUTLER. 

